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@nativescript/swift-ui

Use SwiftUI with NativeScript.

Contents

Installation 

npm install @nativescript/swift-ui

Note

you will need to target iOS 13 at a minimum.

For example, you can add this line to your App_Resources/iOS/build.xcconfig:

IPHONEOS_DEPLOYMENT_TARGET = 13.0

Usage

1. Create your SwiftUI view

This can be any SwiftUI view you'd like to create.

import SwiftUI

struct SampleView: View {

  var body: some View {
    VStack {
      Text("Hello World")
        .padding()
    }
  }
}

2. Create your SwiftUI view Provider

This will prepare your SwiftUI for two-way data bindings to NativeScript and follows the plugins' SwiftUIProvider protocol to standardize all SwiftUI bindings.

import SwiftUI

@objc
class SampleViewProvider: UIViewController, SwiftUIProvider {

  // MARK: INIT

  required init?(coder aDecoder: NSCoder) {
    super.init(coder: aDecoder)
  }

  required public init() {
    super.init(nibName: nil, bundle: nil)
  }

  public override func viewDidLoad() {
    super.viewDidLoad()
    setupSwiftUIView(content: swiftUIView)
  }

  // MARK: PRIVATE

  private var swiftUIView = SampleView()

  /// Receive data from NativeScript
  func updateData(data: NSDictionary) {
      // can be empty
  }

  /// Allow sending of data to NativeScript
  var onEvent: ((NSDictionary) -> ())?
}

3. Register your SwiftUI with an identifier and use it in markup

This can be done in the bootstrap file (often app.ts or main.ts) or even the view component that needs it.

Core 

import { registerSwiftUI, UIDataDriver } from '@nativescript/swift-ui'

// A. You can generate types for your own Swift Provider with 'ns typings ios'
// B. Otherwise you can ignore by declaring the class name you know you provided
declare const SampleViewProvider: any

registerSwiftUI(
  'sampleView',
  view => new UIDataDriver(SampleViewProvider.alloc().init(), view)
)

registerSwiftUI(
  'barChart',
  view => new UIDataDriver(BarChartProvider.alloc().init(), view)
)

Then insert it in any layout as follows:

<Page
  xmlns="http://schemas.nativescript.org/tns.xsd"
  navigatingTo="navigatingTo"
  class="page"
  xmlns:sw="@nativescript/swift-ui"
>
  <StackLayout>
    <sw:SwiftUI swiftId="sampleView" height="150" />
  </StackLayout>
</Page>

Generate Types

  1. To generate types for your SwiftUI code, run ns typings ios.

  2. Locate the objc!nsswiftsupport.d.ts file in typings/x86_64 and reference it in the references.d.ts.

SwiftUI with Angular

Register SwiftUI follows:

import { registerElement } from '@nativescript/angular'
import { SwiftUI } from '@nativescript/swift-ui'

registerElement('SwiftUI', () => SwiftUI)

registerSwiftUI(
  'sampleView',
  view => new UIDataDriver(SampleViewProvider.alloc().init(), view)
)
registerSwiftUI(
  'barChart',
  view => new UIDataDriver(BarChartProvider.alloc().init(), view)
)

It can now be used within any Angular component, eg:

<StackLayout class="p-20">
  <SwiftUI swiftId="sampleView" height="150"></SwiftUI>
</StackLayout>

SwiftUI with Vue

Register SwiftUI follows:

registerElement('SwiftUIView', () => require('@nativescript/swift-ui').SwiftUI)

registerSwiftUI(
  'sampleView',
  view => new UIDataDriver(SampleViewProvider.alloc().init(), view)
)
registerSwiftUI(
  'barChart',
  view => new UIDataDriver(BarChartProvider.alloc().init(), view)
)

Then use it in markup as follows:

<StackLayout>
  <SwiftUIView swiftId="sampleView" height="200" />
  <SwiftUIView height="500" swiftId="barChart" margin="30" />
</StackLayout>

SwiftUI with React

Register SwiftUI follows:

registerSwiftUI(
  'sampleView',
  view => new UIDataDriver(SampleViewProvider.alloc().init(), view)
)

registerSwiftUI(
  'barChart',
  view => new UIDataDriver(BarChartProvider.alloc().init(), view)
)

interface SwiftUIViewAttributes extends ViewAttributes {
  swiftId: string
}

declare global {
  module JSX {
    interface IntrinsicElements {
      swiftUIView: NativeScriptProps<SwiftUIViewAttributes, SwiftUI>
    }
  }
}

registerElement('swiftUIView', () => require('@nativescript/swift-ui').SwiftUI)

Then use it in markup as follows:

<stackLayout>
  <swiftUIView swiftId="sampleView" height="200" />
  <swiftUIView height="500" swiftId="barChart" margin="30" />
</stackLayout>

Credits

Valor Software

NativeScript is proudly supported by Valor Software as an official partner. We are proud to offer guidance, consulting, and development assistance in all things NativeScript.

Contact Valor for assistance.

License

MIT